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Cheap Flights from Chicago to Denver International

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Compare Chicago to Denver International flight deals

Find the cheapest month or even day of the year to fly to Denver International

Book the best Denver International fare with no extra fees

Flight deals from Chicago to Denver International

Looking for a cheap last-minute deal or the best return flight from Chicago to Denver International? Find the lowest prices on one-way and return tickets right here.
Denver.£31 per passenger.Departing Sat, 24 May.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago Midway on Sat, 24 May, arriving in Denver International.Price includes taxes and charges.From £31, select.
Denver.£31 per passenger.Departing Tue, 3 Jun.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago Midway on Tue, 3 Jun, arriving in Denver International.Price includes taxes and charges.From £31, select.
Denver.£35 per passenger.Departing Mon, 28 Apr.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Mon, 28 Apr, arriving in Denver International.Price includes taxes and charges.From £35, select.
Denver.£46 per passenger.Departing Sat, 2 Aug.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Sat, 2 Aug, arriving in Denver International.Price includes taxes and charges.From £46, select.
Denver.£46 per passenger.Departing Wed, 9 Jul.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Chicago O'Hare International on Wed, 9 Jul, arriving in Denver International.Price includes taxes and charges.From £46, select.
Denver.£65 per passenger.Departing Mon, 22 Sep.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Mon, 22 Sep, arriving in Denver International.Price includes taxes and charges.From £65, select.
Denver.£79 per passenger.Departing Fri, 21 Nov.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Fri, 21 Nov, arriving in Denver International.Price includes taxes and charges.From £79, select.
Denver.£79 per passenger.Departing Thu, 16 Oct.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Thu, 16 Oct, arriving in Denver International.Price includes taxes and charges.From £79, select.

Find the cheapest month to fly from Chicago to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to Denver International flights are currently cheapest in May.
Apr
from £35
May
from £31
Jun
from £31
Jul
from £46
Aug
from £46
Sep
from £65
Oct
from £79
Nov
from £79
Dec
from £180
Jan
from £87
Feb
from £752
Mar
Find prices

Direct flights from Chicago to Denver International

Chicago to Denver International: Alternative routes

Compare routes from Chicago to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Chicago to Denver: Flight information

The things to know before you go.
Cheapest flight found£31
Cheapest month to flyMay
Average flight time2 hrs, 45 mins
Most popular airlineSouthwest Airlines
Average flights per week1,074

Finding cheap flights from Chicago to Denver International: Frequently asked questions

The best price we found for a return flight from Chicago to Denver International is £62. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 45 minutes is the average flight time from Chicago to Denver International.
Southwest Airlines, American Airlines and Iberia fly direct from Chicago to Denver International.
As of April 2025, there are 537 flights per week flying from Chicago to Denver International.
The cheapest month to fly from Chicago to Denver International is usually April 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Denver International Airport on Saturday, 24 May 2025.
Yes – the average flight time is 2 hours and 45 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Denver International is Frontier Airlines .

How to find cheap flights to Denver International from Chicago

Looking for cheap tickets from Chicago to Denver International? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

  • Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Chicago to Denver International. And with us there are no hidden fees - what you see is what you pay.
  • Compare flight deals to Denver International from Chicago from over 1,000 providers. Then choose the cheapest or fastest plane tickets.
  • Flex your dates to find the best Chicago-Denver International ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to Denver International from Chicago.
  • Set up a Price Alert. You can easily track the fare of your cheap Chicago-Denver International flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
  • Fly without stops. Only interested in direct flights between Chicago and Denver International? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.
  • Find the cheapest Business class flights from Chicago and Denver International. We scour the internet for the best Business, Premium Economy and First Class flight fares to Denver International, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
  • Include nearby airports in your search. Widen your search for Chicago to Denver International flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.

    • Combine your flight to Denver International from Chicago with hotels and car hire

    Once you've secured your cheap flight ticket from Chicago to Denver International, discover the best prices and exclusive rates for hotels in Denver International or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.


Plan the rest of your trip from Chicago to Denver

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.